Operation
34
© 2017 Pico Technology
pv106ug r1
v. Uncheck the
External Zo match
box (in this case mathematical impedance conversion is done by the
software)
vi. Enter 75 in the
Convert System Zo value
box and click
Apply
vii. Connect the DUT and start the measurement
System impedance chosen is displayed on the top right corner
Note:
S-parameters are interrelated, so, when using the Z
0
conversion facility (and no external impedance
matching networks) without a full set of S-parameters available (e.g. only an S
11
calibration) the program
will assume values for the unavailable parameters as shown in the following table. A warning will be
displayed in such cases.
S
11
S
12
S
21
S
22
10
–6
, j0.0
10
–6
, j0.0
10
–6
, j0.0
10
–6
, j0.0
Table:
Values assumed for parameters not available during Z
0
conversion
6.1.4
Memory facility
The current displayed data on each channel can be stored in memory. Also, each channel can be stored
independently of all others. The
Memory Set Up
window is used to store the data and this window can be
displayed by clicking
Memory
in the main window.
The Memory Set Up window is used to store data into memory
Once the data is stored, it can be displayed by clicking
Display Data and Memory
in the main window.
There are three vector math functions available: sum, subtraction and division. The selected function is used
when you select the
Display Memory Math
function on the main window.
